TMP Importer opens every time on opening any example scene, also Import TMP essentials button shows as disabled, if TMP examples are imported first

Steps to repro:
1. Create a new project
2. Window > Text Mesh Pro > Import TMP Examples
3. Double-click on any example scene

Actual Result:
TMP Importer dialog is open and Import TMP essentials button is disabled even though essentials are not imported in the project

Expected Result:
Import TMP essentials should be enabled

or

Import examples option is disabled under window > text mesh pro unitl esstainls are imported

Occurring with:
2019.3.0a7, 2019.2.0b7, 2019.1.4f1

TextMeshPro Package Version:
2.0.1, 1.3.0

Environment:
Windows 10 and MacOS 10.14